Add and Subtract Decimals

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. For example, 3.14 is a decimal.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

Front

What is the value of 0.5 + 0.25?

Back

0.5 + 0.25 = 0.75.

Front

What is the value of 2.5 - 1.75?

Back

2.5 - 1.75 = 0.75.

Front

What is the combined weight of 12.5 pounds and 7.3 pounds?

Back

12.5 + 7.3 = 19.8 pounds.

Front

What is the difference between 15.6 and 9.4?

Back

15.6 - 9.4 = 6.2.

Front

If you have $5.50 and you spend $2.25, how much do you have left?

Back

$5.50 - $2.25 = $3.25.

Front

What is the total cost of items priced at $3.99, $2.50, and $1.25?

Back

$3.99 + $2.50 + $1.25 = $7.74.

Front

How do you round 3.678 to the nearest hundredth?

Back

3.678 rounded to the nearest hundredth is 3.68.